Scheme 2.
Reagents and conditions: a) 2.5% KOH(aq); b) (di-(3,4-dihydro-2H-pyrrole))diiodozinc, pH 7 phosphate buffer, MeOH; c) phenylacetyl chloride, TEA, DCM; d) 5% KOH(EtOH), reflux.
Reagents and conditions: a) 2.5% KOH(aq); b) (di-(3,4-dihydro-2H-pyrrole))diiodozinc, pH 7 phosphate buffer, MeOH; c) phenylacetyl chloride, TEA, DCM; d) 5% KOH(EtOH), reflux.